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Mellqvist UH, Cai Q, Hester LL, Grövdal M, Börsum J, Rahman I, Ammann EM, Hansson M. Epidemiology and clinical outcomes of light-chain amyloidosis in Sweden: A nationwide population-based study. Eur J Haematol 2023; 111:697-705. [PMID: 37533343 DOI: 10.1111/ejh.14063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 08/04/2023]
Abstract
OBJECTIVES This study evaluated data from six Swedish national registries to fill current evidence gaps on the epidemiology, clinical burden, and overall survival (OS) associated with light-chain (AL) amyloidosis. METHODS Patients newly diagnosed with AL amyloidosis were identified using six linked Swedish nationwide population-based registers. For each case, individuals from the general population were selected and matched with a maximum ratio of 1:5 based on age, sex, calendar year, and county. RESULTS 846 patients newly diagnosed with AL amyloidosis and 4227 demographically matched individuals were identified. From 2011 to 2019, annual AL amyloidosis incidence increased from 10.5 to 15.1 cases per million. At baseline, patients with AL amyloidosis had a significantly higher disease burden including higher rates of cardiac and renal failure relative to the comparison group. Among patients with AL amyloidosis, 21.5% had incident heart failure and 17.1% had incident renal failure after initial diagnosis. Median OS for patients with AL amyloidosis was 56 months versus not reached in the matched general population comparison group. CONCLUSION The incidence of newly diagnosed AL amyloidosis in Sweden increased over time with AL amyloidosis being associated with a higher risk of cardiac/renal failure and all-cause mortality compared with the general population.
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Affiliation(s)
- Ulf-Henrik Mellqvist
- Section of Hematology and Coagulation, Department of Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Qian Cai
- Janssen Global Services, Titusville, New Jersey, USA
| | - Laura L Hester
- Janssen Research & Development, Horsham, Pennsylvania, USA
| | | | | | | | | | - Markus Hansson
- Department of Hematology, Sahlgrenska Academy, Göteborg University and Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Hematology, Skåne University Hospital, Lund, Sweden
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Yoon SE, Kim D, Choi JO, Min JH, Kim BJ, Kim JS, Lee JE, Choi JY, Jeon ES, Kim SJ, Kim K. A comprehensive overview of AL amyloidosis disease characteristics accumulated over two decades at a single referral center in Korea. Int J Hematol 2022; 117:706-717. [PMID: 36574171 DOI: 10.1007/s12185-022-03525-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022]
Abstract
BACKGROUND Characteristics of AL amyloidosis across Asia are not well-described in the literature. Thus, we overviewed the incidence and disease characteristics of AL amyloidosis in Korea. METHODS We collected medical records of 302 AL amyloidosis patients and compared survival outcomes by predominant treatment strategy and at four time points: 1995-2003, 2004-2008, 2009-2013, and 2014-2018. RESULTS The median age was 62 years (36-83). One hundred forty-one patients were classified as stage III (26.3%) or IV (47.9%). The patients diagnosed between 2014 and 2018 survived longer than those diagnosed at other time points due to the introduction of bortezomib (p < 0.01). In addition, patients who received upfront ASCT survived longer than those who received salvage ASCT or chemotherapy alone (p < 0.01). However, most of the 85 patients who experienced early death within 6 months were older than 75 years, had BMI less than 20, and had a high disease burden. CONCLUSIONS The incidence of AL amyloid has increased and survival outcomes have improved gradually, most likely due to introduction of novel agents and upfront ASCT. However, not all patients are suitable for these potent treatment modalities, and avoiding early death within 6 months remains a challenge.
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Affiliation(s)
- Sang Eun Yoon
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea
| | - Darae Kim
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jin-Oh Choi
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ju-Hong Min
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Joon Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung-Sun Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung Eun Lee
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joon Young Choi
- Departement of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eun-Seok Jeon
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seok Jin Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea
| | - Kihyun Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea.
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Abstract
Amyloidosis is a disorder of protein misfolding and metabolism in which insoluble fibrils are deposited in various tissues, causing organ dysfunction and eventually death. Out of the 60-plus heterogeneous amyloidogenic proteins that have been identified, approximately 30 are associated with human disease. The unifying feature of these proteins is their tendency to form beta-pleated sheets aligned in an antiparallel fashion. These sheets then form rigid, nonbranching fibrils that resist proteolysis, causing mechanical disruption and local oxidative stress in affected organs such as the heart, liver, kidneys, nervous system, and gastrointestinal tract. Here we review the epidemiology of light chain amyloidosis, the staging, and the concomitant prognostication that is critical in determining the appropriate treatment.
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Muchtar E, Drake MT, Leung N, Dispenzieri A, Lacy MQ, Buadi FK, Dingli D, Hayman SR, Kapoor P, Hwa YL, Fonder A, Hobbs M, Gonsalves W, Kourelis TV, Warsame R, Russell S, Go RS, Binder M, Kyle RA, Rajkumar SV, Kumar SK, Gertz MA. Hypovitaminosis D Is Prevalent in Patients With Renal AL Amyloidosis and Associated With Renal Outcome. Front Endocrinol (Lausanne) 2022; 13:891712. [PMID: 35800433 PMCID: PMC9253369 DOI: 10.3389/fendo.2022.891712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Vitamin D deficiency is common, but no data have been reported on vitamin D levels in light chain (AL) amyloidosis. PATIENTS AND METHODS In this exploratory study, stored serum samples from 173 patients with newly diagnosed AL amyloidosis were analyzed for vitamin studies which included 25-hydroxyvitamin D [25(OH)D], 1,25-dihydroxyvitamin D [1,25(OH)2D] and vitamin D binding protein (DBP). Measurements were made by liquid chromatography-tandem mass spectrometry. Kidney survival and overall survival (OS) were assessed in association to vitamin D status. RESULTS Cardiac and kidney involvement occurred in 69% and 63% of patients, respectively. 25(OH)D deficiency (<20 ng/mL) was seen in 56.6% of the patients and was notably found among patients with heavy proteinuria (96%), hypoalbuminemia (84.3%) and morbidly obese patients (68.3%). Heavy proteinuria (>5 gr/24-h) and vitamin D supplementation were independent predictors of 25(OH)D level on nominal multivariate regression analysis. 1,25(0H)2D deficiency was noted in 37.6% of patients and was independently associated with low eGFR and hypoalbuminemia. Progression to ESRD occurred in 23.7% of evaluable patients. Patients who progressed to ESRD had lower serum 25(OH)D and 1,25(OH)2D levels compared to those who did not progress to ESRD. On a multivariate analysis, severe 25(OH)D deficiency was an independent predictor of progression to ESRD as was renal stage, while 1,25(OH)2D deficiency was not. CONCLUSIONS Hypovitaminosis D is common in AL amyloidosis, particularly among patients with heavy proteinuria. Severe 25(OH)D deficiency at time of diagnosis predicts progression to ESRD.
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Affiliation(s)
- Eli Muchtar
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
- *Correspondence: Eli Muchtar,
| | - Matthew T. Drake
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
- Department of Endocrinology and Kogod Center of Aging, Mayo Clinic College of Medicine, Rochester, MN, United States
| | - Nelson Leung
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, United States
| | | | - Martha Q. Lacy
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Francis K. Buadi
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - David Dingli
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | | | - Prashant Kapoor
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Yi Lisa Hwa
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Amie Fonder
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Miriam Hobbs
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Wilson Gonsalves
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | | | - Rahma Warsame
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Stephen Russell
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Ronald S. Go
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Moritz Binder
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Robert A. Kyle
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | | | - Shaji K. Kumar
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
| | - Morie A. Gertz
- Division of Hematology, Mayo Clinic, Rochester, MN, United States
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Nguyen FD, Rodriguez M, Krittanawong C, Witteles R, Lenihan DJ. Misconceptions and Facts About Cardiac Amyloidosis. Am J Cardiol 2021; 160:99-105. [PMID: 34610875 DOI: 10.1016/j.amjcard.2021.08.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/22/2021] [Accepted: 08/24/2021] [Indexed: 01/15/2023]
Abstract
Cardiac amyloidosis is an important clinical entity associated with significant morbidity and mortality. Although the signs and symptoms can be apparent early in the disease course, diagnoses are often made late because of inadequate recognition. A diagnosis of cardiac amyloidosis requires careful scrutiny of a patient's symptoms, an electrocardiogram, and imaging studies, including echocardiography and magnetic resonance imaging. Further evaluation is required through the measurement of serum and urine light chains and the use of bone scintigraphy imaging to differentiate transthyretin amyloidosis from light-chain cardiac amyloidosis. The available treatments have expanded tremendously in recent years and have improved outcomes in the population with this disorder. Thus, it has become increasingly important to diagnose cardiac amyloidosis and provide timely therapies. This article will clarify the various misconceptions about cardiac amyloidosis and provide a framework for primary care providers to better identify this disease in their practice.
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Affiliation(s)
| | - Mario Rodriguez
- Division of Cardiology, Washington University School of Medicine, St. Louis, Missouri
| | | | - Ronald Witteles
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California
| | - Daniel J Lenihan
- Division of Cardiology, Washington University School of Medicine, St. Louis, Missouri
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Ravichandran S, Cohen OC, Law S, Sachchithanantham S, Mahmood S, Foard D, Fontana M, Martinez-Naharro A, Whelan C, Gillmore JD, Lachmann HJ, Hawkins PN, Wechalekar AD. Haematologic responses and survival do not significantly decrease with subsequent lines of therapy in systemic immunoglobulin light chain amyloidosis: results from an analysis of real-world longitudinal data. Br J Haematol 2021; 194:587-597. [PMID: 34189728 DOI: 10.1111/bjh.17636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/16/2021] [Accepted: 05/19/2021] [Indexed: 11/27/2022]
Abstract
Systemic immunoglobulin light chain amyloidosis (AL) is an incurable disorder, and the natural history is incompletely understood. In this study, we describe its natural history based on an analysis of real-world longitudinal data. All patients seen at the National Amyloidosis Centre, UK, between February 2010 and August 2019 and treated with up-front bortezomib are included. In all, 1 276 patients received the first-line treatment; 259, 85, and 32 patients received second, third, and fourth treatment lines, respectively. Among patients requiring further treatment after the first line, 77·2% started the second line within two years of the first line; 50·5%, 50·6%, 40·1% and 40·6% of patients had achieved at least very good partial response after the first, second, third and fourth treatment lines. Median overall survival (OS) from first, second, third and fourth lines was 45 months, 56 months, 37 months and not reached, respectively (P = 0·109). In summary, although relapses occur in AL amyloidosis, the outcomes and responses do not worsen with each subsequent relapse, making it attractive to design therapeutics with curative intent.
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Affiliation(s)
- Sriram Ravichandran
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Oliver C Cohen
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Steven Law
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | | | - Shameem Mahmood
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Darren Foard
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Marianna Fontana
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Ana Martinez-Naharro
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Carol Whelan
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Julian D Gillmore
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Helen J Lachmann
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Philip N Hawkins
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
| | - Ashutosh D Wechalekar
- National Amyloidosis Centre, University College London (Royal Free Campus), London, UK
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Di Nora C, Sponga S, Ferrara V, Patriarca F, Fanin R, Nalli C, Lechiancole A, Vendramin I, Livi U. Emerging therapy in light-chain and acquired transthyretin-related amyloidosis: an Italian single-centre experience in heart transplantation. J Cardiovasc Med (Hagerstown) 2021; 22:261-267. [PMID: 33633041 DOI: 10.2459/jcm.0000000000001094] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS The prognosis for patients affected by light-chain cardiac amyloidosis and acquired transthyretin-related (TTR) amyloidosis is poor. Heart transplantation (HTx) could improve prognosis also enabling autologous stem cell transplantation (ASCT) in the first group. METHODS AND RESULTS A total of 36 patients affected by systemic amyloidosis have been referred to our centre from 2009 to 2019. Of these, nine had cardiac involvement: seven by light-chain amyloidosis and two by acquired TTR amyloidosis. None died while waiting for HTx. A specific internal protocol useful to select candidates and to monitor the organ involvement after HTx was developed. Median age at diagnosis was 54 years and 66% were male. The most common short-term complication after HTx was renal failure (44%), followed by acute cardiac rejection more than 2R (22%). ASCT was performed in six out of seven light-chain cardiac amyloidosis patients, with a median time of 6 months after HTx. Two patients affected by light-chain cardiac amyloidosis died due to amyloidosis relapse: one before undergoing ASCT. After a median follow-up of 31 (7-124) months, 1- and 5-year survival was 88 and 66% in the cardiac light-chain amyloidosis group. Conversely, 1- and 5-year survival was 100% in the acquired TTR amyloidosis group. CONCLUSION HTx may represent a valuable option in carefully selected patients. ASCT after HTx is an effective treatment that could decrease amyloidosis relapse in light-chain cardiac amyloidosis patients. A multidisciplinary approach is mandatory to select the best candidates and to obtain the most effective results with a specific surveillance follow-up protocol.
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Affiliation(s)
- Concetta Di Nora
- Department of Cardiothoracic Science, Azienda Sanitaria Universitaria Integrata di Udine
| | - Sandro Sponga
- Department of Cardiothoracic Science, Azienda Sanitaria Universitaria Integrata di Udine
| | - Veronica Ferrara
- Department of Cardiothoracic Science, Azienda Sanitaria Universitaria Integrata di Udine
| | | | - Renato Fanin
- Haematology Department, Azienda sanitaria Universitaria Integrata, DAME
| | - Chiara Nalli
- Department of Cardiothoracic Science, Azienda Sanitaria Universitaria Integrata di Udine
| | - Andrea Lechiancole
- Department of Cardiothoracic Science, Azienda Sanitaria Universitaria Integrata di Udine
| | - Igor Vendramin
- Department of Cardiothoracic Science, Azienda Sanitaria Universitaria Integrata di Udine
| | - Ugolino Livi
- Department of Cardiothoracic Science
- Department of Medical Area DAME, University of Udine, Udine, Italy
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Muchtar E, Gertz MA, Kumar SK, Lacy MQ, Leung N, Buadi FK, Dingli D, Hayman SR, Go RS, Kapoor P, Gonsalves W, Kourelis TV, Warsame R, Hwa YL, Fonder A, Hobbs M, Russell S, Lust JA, Siddiqui M, Rajkumar SV, Kyle RA, Dispenzieri A. Characterization and prognostic implication of delayed complete response in AL amyloidosis. Eur J Haematol 2021; 106:354-361. [PMID: 33230879 PMCID: PMC8103541 DOI: 10.1111/ejh.13554] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Little is known on continued response following completion of therapy in light chain (AL) amyloidosis. METHODS We studied 373 AL amyloidosis patients who achieved complete response (CR) or very good partial response (VGPR) to first-line therapy. RESULTS By end of therapy (EOT), 46% of patients achieved a CR and 54% a VGPR. With no further therapy, 17.5% of patients were upstaged from VGPR to CR (delayed CR), with a median of 9 months. Compared with CR and VGPR at EOT, patients with a delayed CR were characterized by higher proportion of t(11;14) and lower rate of trisomies. Autologous stem cell transplant was more frequent in the delayed CR group. Patients with a delayed CR were characterized by minimal residual disease negativity and organ response rates similar to patients with CR at EOT and higher than patients achieving VGPR at EOT. Patients with a delayed CR had a longer PFS/OS compared to patients with CR or VGPR by EOT (median PFS 149 vs 92 vs 52 months, P < .001; 10-year OS 87% vs 71% vs 56%, P < .001). CONCLUSIONS This study characterizes delayed CR in AL amyloidosis, highlights its prognostic impact which is at least similar to those who achieved CR at EOT, and underlines another aspect of response monitoring.
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Affiliation(s)
- Eli Muchtar
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | | | | | | | - Nelson Leung
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | | | - David Dingli
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | | | - Ronald S. Go
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | | | | | | | - Rahma Warsame
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Yi Lisa Hwa
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Amie Fonder
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Miriam Hobbs
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | | | - John A. Lust
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
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Kyle RA, Larson DR, Kurtin PJ, Kumar S, Cerhan JR, Therneau TM, Rajkumar SV, Vachon CM, Dispenzieri A. Incidence of AL Amyloidosis in Olmsted County, Minnesota, 1990 through 2015. Mayo Clin Proc 2019; 94:465-471. [PMID: 30713046 PMCID: PMC6401262 DOI: 10.1016/j.mayocp.2018.08.041] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/14/2018] [Accepted: 08/14/2018] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To determine the incidence of immunoglobulin light chain amyloidosis (AL amyloidosis) in a strictly defined geographic area from 1990 through 2015. PATIENTS AND METHODS We searched a computerized database for the records of all Olmsted County, Minnesota, residents with a diagnosis of AL amyloidosis from January 1, 1990, through December 31, 2015. In addition, records of all residents with a mention of amyloidosis were obtained from the Rochester Epidemiology Project, which contains the medical records of Mayo Clinic and Olmsted Medical Group. The diagnosis of AL amyloidosis was determined by mass spectrometry, immunohistochemical analysis, or positive Congo red staining. RESULTS Thirty-five patients were identified as having AL amyloidosis. The median age at diagnosis was 76 years (range, 38-90 years), with men accounting for 54%. The incidence rate of AL amyloidosis from 1990 through 2015 adjusted for age and sex was 1.2 per 100,000 person-years (95% CI, 0.8-1.6 per 100,000 person-years). Rates were similar across the decades 1990-1999, 2000-2009, and 2010-2015 at 1.1, 0.9, and 1.6 per 100,000 person-years, respectively, with no suggestion of an increasing rate during the 26 years. There was a trend toward an increasing incidence over time from 1950 through 2015 in Olmsted County, but it was not significant (P=.15). Applying the rate of 1.2 per 100,000 person-years to the US population of 321 million in 2015, one would expect 3852 new cases of AL amyloidosis in the United States each year. CONCLUSION The incidence of AL amyloidosis in Olmsted County has not changed significantly in the past 66 years.
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Affiliation(s)
| | - Dirk R Larson
- Division of Biostatistics, Mayo Clinic, Rochester, MN
| | - Paul J Kurtin
- Division of Hematopathology, Mayo Clinic, Rochester, MN
| | - Shaji Kumar
- Division of Hematology, Mayo Clinic, Rochester, MN
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Phillips EH, Nash S, Adedayo T, Whelan CJ, Fontana M, Mahmood S, Lachmann HJ, Gillmore JD, Smith P, Clifton-Hadley L, Hawkins PN, Wechalekar AD. Pitfalls in conducting prospective trials in stage III cardiac amyloidosis - experience from the REVEAL study. Amyloid 2017; 24:242-244. [PMID: 28984490 DOI: 10.1080/13506129.2017.1385453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/25/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Elizabeth H Phillips
- a Cancer Research UK and University College London Cancer Trials Centre , University College London , London , UK
| | - Stephen Nash
- a Cancer Research UK and University College London Cancer Trials Centre , University College London , London , UK
| | - Toyin Adedayo
- a Cancer Research UK and University College London Cancer Trials Centre , University College London , London , UK
| | - Carol J Whelan
- b National Amyloidosis Centre , University College London , London , UK
| | - Marianna Fontana
- b National Amyloidosis Centre , University College London , London , UK
| | - Shameem Mahmood
- b National Amyloidosis Centre , University College London , London , UK
| | - Helen J Lachmann
- b National Amyloidosis Centre , University College London , London , UK
| | - Julian D Gillmore
- b National Amyloidosis Centre , University College London , London , UK
| | - Paul Smith
- a Cancer Research UK and University College London Cancer Trials Centre , University College London , London , UK
| | - Laura Clifton-Hadley
- a Cancer Research UK and University College London Cancer Trials Centre , University College London , London , UK
| | - Philip N Hawkins
- b National Amyloidosis Centre , University College London , London , UK
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Abstract
INTRODUCTION A systematic literature review on systemic light chain (AL) amyloidosis was conducted in order to understand the disease burden, and identify unmet medical needs and knowledge gaps. METHODS MEDLINE, Embase and Cochrane databases were searched for English language studies published in the last 10 years using search terms that focused on the clinical, economic, and patient-reported outcome (PRO) aspects of AL amyloidosis. There was a low yield of articles in the economic and PRO categories and additional searches were conducted in clinical conference proceedings, and using Google and Google Scholar. After review, there were 65 articles included for data extraction. RESULTS AL amyloidosis is a rare disorder without any FDA or EMA approved indications for drug therapy. Using off-label therapies, there is a high rate, 42-64%, of non-response or progression, and an associated high mortality. Toxicities during therapy are common with estimates of up to 30-40% of patients experiencing severity of grade 3 or higher. Patients with AL amyloidosis report severe psychological distress, anxiety and clinical depression. CONCLUSIONS There is a deficiency in the literature on the economic costs associated with AL amyloidosis, and information on costs has been derived from studies that examined multiple myeloma or other disease or treatment components common to AL amyloidosis.
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Affiliation(s)
- Huamao Mark Lin
- a Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited , Cambridge , MA , USA
| | - Xin Gao
- b Pharmerit International , Bethesda , MD , USA
| | | | - Deborah Berg
- a Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited , Cambridge , MA , USA
| | - Richard Labotka
- a Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited , Cambridge , MA , USA
| | - Douglas V Faller
- a Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited , Cambridge , MA , USA
| | - Brian Seal
- a Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited , Cambridge , MA , USA
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